Seiko Cal. 6640 - 630

This Hand-Winding model from 1988 features a 44mm Titanium case. With its 20mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-3b64d8ef0b34]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1988

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